<!DOCTYPE html>
<html lang="zh-CN" data-bs-theme="dark">
<head>
    <script src="assets/js/color-modes.js"></script>

    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
    <meta name="generator" content="Hugo 0.118.2">
    <title>用户注册</title>
    <link rel="canonical" href="https://getbootstrap.com/docs/5.3/examples/sign-in/">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@docsearch/css@3">
    <link href="assets/dist/css/bootstrap.min.css" rel="stylesheet">

    <style>
        .bd-placeholder-img {
            font-size: 1.125rem;
            text-anchor: middle;
            -webkit-user-select: none;
            -moz-user-select: none;
            user-select: none;
        }

        .avatar {
            width: 100px; /* 调整照片的宽度 */
            height: 100px; /* 调整照片的高度 */
            border-radius: 50%; /* 将照片设置为圆形 */
            object-fit: cover; /* 保持照片比例并填充整个元素 */
        }

        @media (min-width: 768px) {
            .bd-placeholder-img-lg {
                font-size: 3.5rem;
            }
        }

        .b-example-divider {
            width: 100%;
            height: 3rem;
            background-color: rgba(0, 0, 0, .1);
            border: solid rgba(0, 0, 0, .15);
            border-width: 1px 0;
            box-shadow: inset 0 .5em 1.5em rgba(0, 0, 0, .1), inset 0 .125em .5em rgba(0, 0, 0, .15);
        }

        .b-example-vr {
            flex-shrink: 0;
            width: 1.5rem;
            height: 100vh;
        }

        .bi {
            vertical-align: -.125em;
            fill: currentColor;
        }

        .nav-scroller {
            position: relative;
            z-index: 2;
            height: 2.75rem;
            overflow-y: hidden;
        }

        .nav-scroller .nav {
            display: flex;
            flex-wrap: nowrap;
            padding-bottom: 1rem;
            margin-top: -1px;
            overflow-x: auto;
            text-align: center;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
        }

        .btn-bd-primary {
            --bd-violet-bg: #712cf9;
            --bd-violet-rgb: 112.520718, 44.062154, 249.437846;

            --bs-btn-font-weight: 600;
            --bs-btn-color: var(--bs-white);
            --bs-btn-bg: var(--bd-violet-bg);
            --bs-btn-border-color: var(--bd-violet-bg);
            --bs-btn-hover-color: var(--bs-white);
            --bs-btn-hover-bg: #6528e0;
            --bs-btn-hover-border-color: #6528e0;
            --bs-btn-focus-shadow-rgb: var(--bd-violet-rgb);
            --bs-btn-active-color: var(--bs-btn-hover-color);
            --bs-btn-active-bg: #5a23c8;
            --bs-btn-active-border-color: #5a23c8;
        }

        .bd-mode-toggle {
            z-index: 1500;
        }

        .bd-mode-toggle .dropdown-menu .active .bi {
            display: block !important;
        }
    </style>
    <!-- Custom styles for this template -->
    <link href="assets/dist/css/sign-in.css" rel="stylesheet">
</head>
<body class="d-flex align-items-center py-4 bg-body-tertiary">

<svg xmlns="http://www.w3.org/2000/svg" class="d-none">
    <symbol id="check2" viewBox="0 0 16 16">
        <path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"></path>
    </symbol>
    <symbol id="circle-half" viewBox="0 0 16 16">
        <path d="M8 15A7 7 0 1 0 8 1v14zm0 1A8 8 0 1 1 8 0a8 8 0 0 1 0 16z"></path>
    </symbol>
    <symbol id="moon-stars-fill" viewBox="0 0 16 16">
        <path d="M6 .278a.768.768 0 0 1 .08.858 7.208 7.208 0 0 0-.878 3.46c0 4.021 3.278 7.277 7.318 7.277.527 0 1.04-.055 1.533-.16a.787.787 0 0 1 .81.316.733.733 0 0 1-.031.893A8.349 8.349 0 0 1 8.344 16C3.734 16 0 12.286 0 7.71 0 4.266 2.114 1.312 5.124.06A.752.752 0 0 1 6 .278z"></path>
        <path d="M10.794 3.148a.217.217 0 0 1 .412 0l.387 1.162c.173.518.579.924 1.097 1.097l1.162.387a.217.217 0 0 1 0 .412l-1.162.387a1.734 1.734 0 0 0-1.097 1.097l-.387 1.162a.217.217 0 0 1-.412 0l-.387-1.162A1.734 1.734 0 0 0 9.31 6.593l-1.162-.387a.217.217 0 0 1 0-.412l1.162-.387a1.734 1.734 0 0 0 1.097-1.097l.387-1.162zM13.863.099a.145.145 0 0 1 .274 0l.258.774c.115.346.386.617.732.732l.774.258a.145.145 0 0 1 0 .274l-.774.258a1.156 1.156 0 0 0-.732.732l-.258.774a.145.145 0 0 1-.274 0l-.258-.774a1.156 1.156 0 0 0-.732-.732l-.774-.258a.145.145 0 0 1 0-.274l.774-.258c.346-.115.617-.386.732-.732L13.863.1z"></path>
    </symbol>
    <symbol id="sun-fill" viewBox="0 0 16 16">
        <path d="M8 12a4 4 0 1 0 0-8 4 4 0 0 0 0 8zM8 0a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-1 0v-2A.5.5 0 0 1 8 0zm0 13a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-1 0v-2A.5.5 0 0 1 8 13zm8-5a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1 0-1h2a.5.5 0 0 1 .5.5zM3 8a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1 0-1h2A.5.5 0 0 1 3 8zm10.657-5.657a.5.5 0 0 1 0 .707l-1.414 1.415a.5.5 0 1 1-.707-.708l1.414-1.414a.5.5 0 0 1 .707 0zm-9.193 9.193a.5.5 0 0 1 0 .707L3.05 13.657a.5.5 0 0 1-.707-.707l1.414-1.414a.5.5 0 0 1 .707 0zm9.193 2.121a.5.5 0 0 1-.707 0l-1.414-1.414a.5.5 0 0 1 .707-.707l1.414 1.414a.5.5 0 0 1 0 .707zM4.464 4.465a.5.5 0 0 1-.707 0L2.343 3.05a.5.5 0 1 1 .707-.707l1.414 1.414a.5.5 0 0 1 0 .708z"></path>
    </symbol>
</svg>
<div class="dropdown position-fixed bottom-0 end-0 mb-3 me-3 bd-mode-toggle">
    <button class="btn btn-bd-primary py-2 dropdown-toggle d-flex align-items-center" id="bd-theme" type="button"
            aria-expanded="false" data-bs-toggle="dropdown" aria-label="Toggle theme (light)">
        <svg class="bi my-1 theme-icon-active" width="1em" height="1em">
            <use href="#sun-fill"></use>
        </svg>
        <span class="visually-hidden" id="bd-theme-text">Toggle theme</span>
    </button>
    <ul class="dropdown-menu dropdown-menu-end shadow" aria-labelledby="bd-theme-text" style="">
        <li>
            <button type="button" class="dropdown-item d-flex align-items-center active" data-bs-theme-value="light"
                    aria-pressed="true">
                <svg class="bi me-2 opacity-50 theme-icon" width="1em" height="1em">
                    <use href="#sun-fill"></use>
                </svg>
                Light
                <svg class="bi ms-auto d-none" width="1em" height="1em">
                    <use href="#check2"></use>
                </svg>
            </button>
        </li>
        <li>
            <button type="button" class="dropdown-item d-flex align-items-center" data-bs-theme-value="dark"
                    aria-pressed="false">
                <svg class="bi me-2 opacity-50 theme-icon" width="1em" height="1em">
                    <use href="#moon-stars-fill"></use>
                </svg>
                Dark
                <svg class="bi ms-auto d-none" width="1em" height="1em">
                    <use href="#check2"></use>
                </svg>
            </button>
        </li>
        <li>
            <button type="button" class="dropdown-item d-flex align-items-center" data-bs-theme-value="auto"
                    aria-pressed="false">
                <svg class="bi me-2 opacity-50 theme-icon" width="1em" height="1em">
                    <use href="#circle-half"></use>
                </svg>
                Auto
                <svg class="bi ms-auto d-none" width="1em" height="1em">
                    <use href="#check2"></use>
                </svg>
            </button>
        </li>
    </ul>
</div>


<main class="form-signin w-100 m-auto">
    <form id="accountAndPwd">
        <img class="mb-4" src="assets/brand/bootstrap-logo.svg" alt="" width="72" height="57">
        <h1 class="h3 mb-3 fw-normal">注册</h1>

        <div class="form-floating">
            <input type="text" class="form-control" id="userAccount" placeholder="name" name="userAccount" required
                   oninput="findUserByAccount()">
            <label for="userAccount">用户名</label>
            <span id="checkDuplicateAccount"></span>
        </div>
        <p></p>
        <div class="form-floating">
            <input type="password" class="form-control" id="userPassword" placeholder="Password" name="userPassword"
                   required>
            <label for="userPassword">密码</label>
        </div>
        <p></p>
        <div class="form-floating">
            <input type="password" class="form-control" id="confirmingPassword" placeholder="Password"
                   name="confirmingPassword" required>
            <label for="confirmingPassword">请确认密码</label>
            <span id="passwordMatchMessage"></span>
        </div>
        <button class="btn btn-primary w-100 py-2" onclick="showAvatarUpload()" type="button" id="nextStep" disabled>
            下一步
        </button>
        <p></p>
        <a href="/login" class="btn btn-primary w-100 py-2">回到登录页面</a>
        <p class="mt-5 mb-3 text-body-secondary">© 2017–2023</p>
    </form>

    <div id="avatar-upload" style="display: none">
        <h3>选择您的头像</h3>
        <div>
            <img id="avatar-preview" class="avatar" src="photo/default.png" alt="默认头像">
            <input type="file" id="avatar" accept="image/*"><br><br>
        </div>
        <button type="button" class="btn btn-primary w-100 py-2" id="previousStep" onclick="hideAvatarUpload()">上一步
        </button>
        <p></p>
        <button type="button" onclick="submitForm()" class="btn btn-primary w-100 py-2">提交</button>
    </div>

    <script>
        function findUserByAccount() {
            var userAccount = document.getElementById("userAccount").value;
            var checkDuplicateAccount = document.getElementById("checkDuplicateAccount");
            var url = "/findUser?userAccount=" + encodeURIComponent(userAccount);
            var xhr = new XMLHttpRequest();
            xhr.open("Get", url, true);
            xhr.onreadystatechange = function () {
                if (xhr.readyState === XMLHttpRequest.DONE) {
                    if (xhr.status === 200) {
                        if (xhr.responseText !== "") {
                            checkDuplicateAccount.textContent = "用户已存在";
                            checkDuplicateAccount.style.color = "red";
                            checkName = false;
                        } else {
                            checkDuplicateAccount.textContent = "✔";
                            checkDuplicateAccount.style.color = "green";
                            checkName = true;
                        }
                        wholeCheck();
                    } else {
                        // tackle request error
                        checkDuplicateAccount.textContent = xhr.responseText;
                        checkDuplicateAccount.style.color = "red";
                    }
                }
            };
            xhr.send();
        }
    </script>

    <script>
        const fileInput = document.getElementById('avatar');
        const avatarPreview = document.getElementById('avatar-preview');

        fileInput.addEventListener('change', function () {
            const file = this.files[0]; // 获取选择的文件（第一个文件）
            if (file) {
                const reader = new FileReader();
                reader.onload = function (e) {
                    avatarPreview.src = e.target.result; // 将选择的文件读取为DataURL，并设置为头像预览的源
                };
                reader.readAsDataURL(file); // 读取文件为DataURL
            } else {
                avatarPreview.src = "../../static/photo/default-avatar.png"; // 如果没有选择文件，恢复为默认头像的源
            }
        });
    </script>

    <script>
        var nextButton = document.getElementById("nextStep");
        var userAccount = document.getElementById("userAccount");
        var userPassword = document.getElementById("userPassword");
        var confirmingPasswordInput = document.getElementById("confirmingPassword");
        var passwordMatchMessage = document.getElementById("passwordMatchMessage");
        var checkName = false;
        var checkPwd = false;
        var confirmPwd = false;

        userAccount.addEventListener("input", function () {
            if (userAccount.value === "") {
                checkName = false;
                hideCheckNameTip();
            } else {
                checkName = true;
                showCheckNameTip();
            }
            wholeCheck();
        });
        userAccount.addEventListener("change", function () {
            if (userAccount.value === "") {
                checkName = false;
                hideCheckNameTip();
            }
            wholeCheck();
        });
        userPassword.addEventListener("input", function () {
            if (userPassword.value === "" || confirmingPasswordInput.value !== userPassword.value) {
                checkPwd = false;
            } else {
                checkPwd = true;
            }
            wholeCheck();
        });
        confirmingPasswordInput.addEventListener("input", function () {
            if (confirmingPasswordInput.value === "" || confirmingPasswordInput.value !== userPassword.value) {
                passwordMatchMessage.textContent = "两次输入的密码不一致";
                passwordMatchMessage.style.color = "red";
                confirmPwd = false;
            } else {
                passwordMatchMessage.textContent = "✔";
                passwordMatchMessage.style.color = "green";
                confirmPwd = true;
                checkPwd = true;
            }
            wholeCheck();
        });

    </script>

    <script>
        function wholeCheck() {
            if (checkName && checkPwd && confirmPwd)
                nextButton.disabled = false;
            else nextButton.disabled = true;
        }

        function hideAvatarUpload() {
            document.getElementById('avatar-upload').style.display = 'none';
            document.getElementById('accountAndPwd').style.display = 'block'
        }

        function hideCheckNameTip() {
            document.getElementById('checkDuplicateAccount').style.display = 'none';
            nextButton.disabled = true;
        }

        function showCheckNameTip() {
            document.getElementById('checkDuplicateAccount').style.display = 'block';
        }

        function showAvatarUpload() {
            document.getElementById('avatar-upload').style.display = 'block';
            document.getElementById('accountAndPwd').style.display = 'none'
        }

        function submitForm() {
            var form = document.getElementById("accountAndPwd");
            var formData = new FormData(form);
            var avatarFile = document.getElementById('avatar').files[0];
            formData.append('avatar', avatarFile);

            // submit form
            var xhr = new XMLHttpRequest();
            xhr.open("POST", "/register", true);
            xhr.send(formData);

            xhr.onreadystatechange = function () {
                if (xhr.readyState === XMLHttpRequest.DONE) {
                    if (xhr.status === 200) {
                        window.location.href = "/login";
                    }
                }
            }
        }
    </script>
</main>
<script src="assets/dist/js/bootstrap.bundle.min.js"></script>
</body>
</html>